"""
@name : main
@author : wenyao
@projectname: sanchuanglianxi
"""


# import math
# from math import sqrt
# print(sqrt(9))
#
# from math import *
#导入math下的所有功能函数或者模块

#动态导入
#mod = input("请输入你想导入的模块：")
# import importlib
# wy = importlib.import_module("math")
# print(wy.sqrt(4))

#只执行一次 第一次导入就已加载到内存  sys.modules 可查看
# from pack01 import three
# from pack01 import three

# import sys
# print(sys.modules.keys())

#导入的模块同名，使用后导入的
# from pack02 import three
#
# three.test()


#取别名
# from pack01 import three as pack01_three
# from pack02 import three as pack02_three
#
# pack01_three.test()
# pack02_three.test()

#import  pandas as pd

